    /* 清除内外边距 */
    
    article,
    aside,
    blockquote,
    body,
    button,
    code,
    dd,
    details,
    div,
    dl,
    dt,
    fieldset,
    figcaption,
    figure,
    footer,
    form,
    h1,
    h2,
    h3,
    h4,
    h5,
    h6,
    header,
    hgroup,
    hr,
    input,
    legend,
    li,
    menu,
    nav,
    ol,
    p,
    pre,
    section,
    td,
    textarea,
    th,
    ul {
        margin: 0;
        padding: 0;
    }
    /* 设置默认字体样式 */
    
    body,
    button,
    input,
    select,
    textarea {
        font: 12px/1.5 Helvetica Neue, Helvetica, Arial, Hiragino Sans GB, \5FAE\8F6F\96C5\9ED1, tahoma, simsun, \5b8b\4f53;
    }
    /* 去除默认小圆点 */
    
    li {
        list-style: none;
    }
    /* 清除浮动 */
    
    .clearfix::after {
        content: '';
        display: block;
        clear: both;
    }
    /* 清除默认边框 */
    
    img {
        border: none;
        vertical-align: middle;
    }
    /* 去除链接的下划线 */
    
    a {
        text-decoration: none;
        color: #666;
    }
    /* 去除斜体 */
    
    i {
        font-style: normal;
    }
    /* 左浮动 */
    
    .fl {
        float: left;
    }
    /* 右浮动 */
    
    .fr {
        float: right;
    }
    /* 主版块 */
    
    .section {
        width: 1090px;
        margin: 0 auto;
    }
    
    .cont {
        width: 1100px;
        margin: 0 auto;
    }
    /* 聚焦红色 */
    
    .c4 {
        color: #ff1e32;
    }